Powermastic 3520A amps

Re: Powermastic 3520A amps

TDaniel

>Since the motor is 3 phase I think the starting amps will be not much more than full load amps, someone else may be able to give you a better answer. Our club lathe is a PM3520 and is on a 20 amp breaker and that is plenty; a 15 amp would probably work. I like to fuse my motors rather close.

Re: Powermastic 3520A amps

Everette Harmon

>The 3520 is not 3 phase. I hard wired mine into two 20 amp circuits with a cut off switch in between.

Everette

Re: Powermastic 3520A amps

Rick R, So Cal

>Everette and Terry are both right- the motor is 3-phase, but the lathe runs off single phase; the inverter handles the conversion. The inverter also keeps starting currents low, since it has soft-start. I use a 15A 220V plug.

Rick

Re: Powermastic 3520A amps

Ted Okolichany

>Thanks for your responses..My electrician was the one that requested the amp information.

Ted

Re: Powermastic 3520A amps

Jeff Jilg

>Consider having your electrician install a switch on the 220 circuit as well. I installed one myself - it's not that hard. Why? So you can switch off the power when you're not running your lathe (ie. at night). Although the lathe itself isn't running when you switch off the red stop switch, the variable speed drive (inverter) unit will still be on. It's a lot easier to hit a switch after you're done for the day, than pull a 220 plug. Just my opinion....Jeff

Re: Powermastic 3520A amps

David Hammond, in Powder Springs GA

>Good idea - wish I had done that now - just finsihed running three 220 outlets, two have to be unplugged, and a switch would be easier.

David

You can still wire a switch inline.

Al Crandall -Pendleton, IN.-

>I put a switch in the cord going from the vfd to the plug so I can plug and unplug the lathe without sparks flying at the wall recepticle. The vfd is always "hot" with a small load on it to power up the led's, so there is a tendancy for the plug to spark.

Re: You can still wire a switch inline.

Ted Okolichany

>I already have a switch box in place for my surface planer. I think that we will just put that type plug on the 3520 power cord and plug it into the same outlet to which the switch box is connected to. That way, I have to turn on that big magnetic switch to get power to the outlet....thus to the lathe.

Thanks for your ideas..

Ted

Location, location, location

Bill Howatt

>Don't know where the power switch is located on your PM machines but seriously consider putting the power-saving shut-off away from the headstock. This way if you have a problem with something coming adrift you have a handy emergency kill switch away from the line-of-fire. Make sure you don't have to cross the line-of-fire to get to it.

Bill

Re: Powermastic 3520A amps

Jeff Jilg

>David, I installed my switch after the lines were installed. Pretty simple. Just turn off the power at your breaker, go into the wall above the 220 plug, and install the switch. I purchased the length of wire needed plus one foot just in case.

The difficult part was dealing with the 10 gauge wire. That stuff doesn't bend worth a darn! Had them install 10 gauge so I could run more juice thru that wire if I ever need it. .....Jeff